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Finding the Fourth Proportional to 14,643.77, 21,923.58 and 8,621.63

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Solution

The fourth proportional to 14,643.77, 21,923.58 and 8,621.63 is: 12,907.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,643.77 : 21,923.58 = 8,621.63 : x
  2. Step 2: Convert to fraction form
    14,643.77/21,923.58 = 8,621.63/x
  3. Step 3: Cross multiply
    14,643.77x = 21,923.58 × 8,621.63
  4. Step 4: Simplify right side
    14,643.77x = 189,016,885.42
  5. Step 5: Solve for x
    x = 189,016,885.42/14,643.77
  6. Step 6: Final answer
    x = 12,907.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.